Phrases Expressing Boredom or Interest

I'm completely engrossed.

C2

Meaning

Fully absorbed and captivated.

Example sentences

John: 'I haven't noticed you leaving your desk all day.'<br>

Alice: 'I'm completely engrossed in this new project.'

John: 'I'm completely engrossed as well.'

Alice: 'I lost all track of time.'<br>